tomorrow's inauguration falls on the national holiday for the civil rights leader. another float featuring a replica of a plane flown in world war ii by the tuskegee airmen. people are expected to begin lining up early. and tomorrow afternoon, jim and doreen answering our parade coverage. >>> president obama and vice president biden weren't the only ones sworn in today. derek ward introduces us to some of the law enforcement officers from across the country who are here in d.c. to make sure the inauguration goes off without a hitch. >> reporter: law enforcement officers from far and near came to american university's bender arena to be sworn in as deputy u.s. marshalls to help with inaugural coverage. [ inaudible ] a briefing before duty of protecting a president, first family and 500,000 spectators while remaining vigilant. so while they may be enjoying their time in the nation's capital, this is no field trip. >> if the president should get out of the limousine, know where the president is, know where the rest of the secret service is. >> we do have special securi